US9216770B2 - Motor vehicle including an upper firewall crossbeam - Google Patents

Motor vehicle including an upper firewall crossbeam Download PDF

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Publication number
US9216770B2
US9216770B2 US14/362,012 US201214362012A US9216770B2 US 9216770 B2 US9216770 B2 US 9216770B2 US 201214362012 A US201214362012 A US 201214362012A US 9216770 B2 US9216770 B2 US 9216770B2
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Prior art keywords
crossbeam
vehicle
motor vehicle
wall
upper
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US14/362,012
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US20140354011A1 (en
Inventor
Christian Delord
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Renault SAS
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Renault SAS
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Priority to FR1161094 priority Critical
Priority to FR1161094A priority patent/FR2983450B1/en
Application filed by Renault SAS filed Critical Renault SAS
Priority to PCT/EP2012/074016 priority patent/WO2013079627A1/en
Assigned to RENAULT S.A.S. reassignment RENAULT S.A.S. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DELORD, CHRISTIAN
Publication of US20140354011A1 publication Critical patent/US20140354011A1/en
Publication of US9216770B2 publication Critical patent/US9216770B2/en
Application granted granted Critical
Application status is Active legal-status Critical
Anticipated expiration legal-status Critical

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D25/00Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08Front or rear portions
    • B62D25/081Cowls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D25/00Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08Front or rear portions
    • B62D25/14Dashboards as superstructure sub-units
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D25/00Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08Front or rear portions
    • B62D25/14Dashboards as superstructure sub-units
    • B62D25/145Dashboards as superstructure sub-units having a crossbeam incorporated therein

Abstract

A motor vehicle including a motor vehicle body defined by two body sides and a vehicle floor, and a wall attached laterally to the body sides and transversely to the floor, to separate a passenger compartment of the vehicle from the engine compartment. The motor vehicle further includes an upper firewall crossbeam having a cross-section that opens toward outside of the vehicle, and which is closed by the wall. The upper firewall crossbeam is omega-shaped, including a first portion configured to be attached onto the wall and a second portion configured to be attached onto the wall, the first and second portions being connected via swaged portions, the first portion extending toward the engine compartment of the vehicle via a first swaged portion, which is inclined relative to a longitudinal axis of the vehicle. The upper crossbeam includes openings configured to engage with a mechanism for attaching windshield-wiper crankpins.

Description

The present invention relates to the field of motor vehicles and especially the frontal part of motor vehicles.

By “frontal part” there is understood the front structure comprising a transverse partition known as a “firewall”, separating the passenger compartment of a motor vehicle from the engine compartment, a dashboard crossbeam situated below the windshield, a dashboard, a lower window crossbeam extending substantially parallel to the dashboard crossbeam, in order in particular to reinforce the dashboard crossbeam, as well as a heating partition joined to the transverse partition.

In order to reinforce the transverse partition, it is known to provide an upper firewall crossbeam, making it possible to protect the braking system or servo brake in the event of a head-on collision. In fact, the servo brake is generally situated in the upper part of the transverse partition. Furthermore, it is known to provide systems for fixation of windshield wiper crank pins.

In certain motor vehicles, the firewall crossbeam is constituted by an assembly of parts joined together by welding.

Document FR 2921886, which describes a central firewall crossbeam, proposes a single firewall crossbeam in order to reduce the number of parts as well as the welding steps.

Nevertheless, such a crossbeam does not permit the servo brake to be protected or means for fixation of windshield wiper crank pins to be integrated.

The purpose of the present invention is therefore to remedy these disadvantages.

One objective of the invention is therefore to provide a motor vehicle comprising an upper firewall crossbeam making it possible simultaneously to assure protection of the braking system, evacuation of water under the window crossbeam, as well as fixation of windshield wiper crank pins without creating transverse overcrowding or overweight, all while being simple to use and inexpensive.

According to one embodiment, the object of the invention is a motor vehicle comprising a motor vehicle body bounded by two body sides and a vehicle floor, a wall fixed laterally to the body sides and transversely to the vehicle floor, and intended to separate the passenger compartment of the vehicle from an engine compartment, and an upper firewall crossbeam having a transverse section opening toward the passenger compartment of the vehicle and closed by the wall.

The upper firewall crossbeam is omega-shaped comprising a first portion intended to be fixed to the wall and a second portion intended to be fixed to the wall. The first and second portions are, for example, joined by swaged portions.

The upper crossbeam comprises orifices capable of cooperating with means for fixation of windshield wiper crank pins.

Thus the specific shape of the upper firewall crossbeam, schematically representing an omega shape, makes it possible to make the upper part of the wall rigid in the event of a head-on collision of the motor vehicle with an external element, and in particular makes it possible to retain an element such as a braking system or servo brake, generally situated in the upper part of the wall, in the event of a head-on collision between the motor vehicle and an external element and thus to limit its intrusion into the passenger compartment of the vehicle. Furthermore, the windshield wipers are directly fixed on the upper firewall crossbeam without addition of supplementary parts.

Advantageously, the upper firewall crossbeam conforms with the shape of the wall.

For example, the first portion is extended toward the engine compartment of the vehicle by a first swaged portion. In non-limitative manner, the first portion may be inclined relative to a longitudinal axis of the vehicle.

For example, the first portion is extended toward the engine compartment of the vehicle by a first swaged portion, inclined relative to a longitudinal axis of the vehicle. Thus the inclined surface of the first swaged portion makes it possible for water to run off naturally toward the front of the motor vehicle.

Advantageously, the first and second portions respectively of the upper crossbeam are fixed sealingly to the wall by spot welds. In fact, such a crossbeam requires only two lines of spot welds and two lines of sealing means, such as putty, for example, which makes it possible to reduce the cost and duration of assembly.

In one embodiment, the wall comprises a transverse partition intended to be fixed to the vehicle floor and a heating partition intended to be fixed to the transverse partition.

Advantageously, the upper firewall crossbeam is intended to be fixed by a first portion to the heating partition and by a second portion to the transverse partition. Thus the specific shape of the upper firewall crossbeam makes it possible more particularly to make the upper part of the wall or transverse partition, known as “firewall”, rigid in the event of a head-on collision of the motor vehicle with an external element.

The transverse section of the upper firewall crossbeam opening toward the passenger compartment of the vehicle is intended, for example, to be closed by the heating partition or by the transverse partition.

The upper crossbeam may be made of swaged sheet metal or by any other constructional method, such as profiling, for example.

Other objectives, characteristics and advantages of the invention will become apparent upon reading the description hereinafter, provided solely by way of non-limitative example and composed with reference to the attached drawings, wherein:

FIG. 1 schematically represents a frontal part of a motor vehicle according to the invention;

FIG. 2 illustrates a detail of the upper firewall crossbeam according to FIG. 1;

FIG. 3 illustrates a transverse section of FIG. 2;

FIGS. 4 and 5 illustrate variants of FIG. 3.

In the course of the description, the terms “longitudinal”, “transverse”, “vertical”, “front”, “rear”, “left” and “right” are understood relative to the usual orthogonal frame of reference of motor vehicles, represented in FIG. 2 and comprising:

    • a longitudinal axis X, horizontal and directed from the rear to the front of the vehicle;
    • a transverse axis Y, horizontal, perpendicular to axis X and directed from left to right of the vehicle moving in forward direction;
    • an axis Z, orthogonal to axes X and Y and vertical.

As illustrated in FIG. 1, a frontal part of a motor vehicle, denoted by 1 on the whole, comprises a body bounded by two body sides 2 a, 2 b and a vehicle floor, one part 3 of which is represented in FIG. 1. The body defines an interior 1 a and an exterior of vehicle 1. The interior 1 a of vehicle 1 represents the passenger compartment of vehicle 1.

The front structure of motor vehicle 1 comprises a wall 4 separating passenger compartment 1 a of motor vehicle 1 from an engine compartment 1 b, a dashboard crossbeam (not represented) situated underneath the windshield (not represented) and a lower window crossbeam 5, extending substantially parallel to the dashboard crossbeam.

As illustrated in FIGS. 2 and 3, wall 4 comprises a transverse partition 6 known as “firewall”, disposed behind engine compartment 1 b, and a heating partition 7 joined to transverse partition 6. Transverse partition 6 is disposed in motor vehicle 1 transversely along axis Y, between body sides 2 a, 2 b, and horizontally between floor 3 and heating partition 7. In the embodiment illustrated in FIGS. 2 and 3, heating partition 7 comprises a first portion 7 a, inclined relative to vertical axis Z, intended to be fixed to lower window crossbeam 5 and extending toward transverse partition 6 by a second portion 7 b, inclined relative to first portion 7 a. Second portion 7 b is extended toward engine compartment 1 b of vehicle 1 by a substantially horizontal portion 7 c then by a fourth substantially vertical portion 7 d for fixation to transverse partition 6. Alternatively, first and second portions 7 a, 7 b may be substantially vertical and substantially horizontal portion 7 c may be inclined relative to longitudinal axis X.

To reinforce transverse partition 6 in an upper part 6 a close to heating partition 7, motor vehicle 1 comprises an upper firewall crossbeam 8. Upper firewall crossbeam 8 makes it possible to make upper part 6 a of transverse partition 6 rigid and to prevent intrusion of braking system 9, or servo brake, in the event of head-on collision between motor vehicle 1 and an external element (not represented). In fact, servo brake 9, illustrated by dashed lines in FIG. 3, is generally situated in upper part 6 a of transverse partition 6.

Upper firewall crossbeam 8, made, for example, of swaged sheet metal, is disposed in motor vehicle 1 transversely along axis Y, between body sides 2 a, 2 b.

Upper firewall crossbeam 8 comprises a first portion 8 a intended to be fixed on first portion 7 a of heating partition 7. In the illustrated embodiment, first portion 8 a is inclined relative to vertical axis Z. Upper firewall crossbeam 8 comprises a second substantially vertical portion 8 b intended to be fixed to transverse partition 6. First portion 8 a of upper crossbeam 8 conforms to the shape of first portion 7 a of heating partition 7.

First and second portions 8 a, 8 b are joined by swaged portions 8 c, 8 d, 8 e, 8 f. First portion 8 a is extended toward the front of motor vehicle 1 by a first swaged portion 8 c, inclined relative to longitudinal axis X by an angle a, for example of 8°. First swaged portion 8 c is extended toward the front of the vehicle, especially toward engine compartment 1 b, by a second swaged portion 8 d, for example, inclined relative to first swaged portion 8 c and extended in turn by a third substantially vertical swaged portion 8 e, then by a fourth substantially horizontal swaged portion 8 f.

In the example illustrated in FIGS. 2 and 3, upper firewall crossbeam 8 has a transverse section opening toward passenger compartment 1 a of vehicle 1 and closed by heating partition 7.

First and second portions 8 a, 8 b of upper firewall crossbeam 8 are respectively fixed sealingly by sealing means 10 a, 10 b to heating partition 7 and to transverse partition 6 and by spot welds 11, such as illustrated in FIG. 2.

Alternatively, a crossbeam reinforcement 12 is disposed between upper firewall crossbeam 8 and heating partition 7. Crossbeam reinforcement 12 comprises swaged portions 12 a, 12 b, 12 c, 12 d respectively conforming to the shape of swaged portions 8 c, 8 d, 8 e and 8 f of upper firewall crossbeam 8. Fourth swaged portion 12 d of crossbeam reinforcement 12 is in contact with substantially horizontal portion 7 c of heating partition 7.

Crossbeam reinforcement 12, welded to upper firewall crossbeam 8, also has a transverse section opening toward passenger compartment 1 a of vehicle 1 and closed by heating partition 7.

As illustrated in FIG. 2, upper firewall crossbeam 8 comprises orifices 13 capable of cooperating with means for fixation of windshield wiper crank pins (not represented).

The embodiments of FIGS. 4 and 5, in which like elements have like reference numerals, differ from the embodiment illustrated in FIGS. 2 and 3 only by the structure of separating wall 4 between passenger compartment 1 a and engine compartment 1 b of vehicle 1.

As illustrated in FIG. 4, upper part 6 a of transverse partition 6 is prolonged toward heating partition 7 by a second part 6 b substantially inclined relative to upper part 6 a.

In this embodiment, the transverse section of upper firewall crossbeam 8, opening toward passenger compartment 1 a of vehicle 1, is closed by transverse partition 6, and in particular by second part 6 b.

A reinforcement (not represented in this figure) could also be welded to upper firewall crossbeam 8 in a manner identical to that of the embodiment of FIG. 3.

As illustrated in FIG. 5, separating wall 4 is formed by a single metal sheet forming heating partition 7 and transverse partition 6.

In this embodiment, the transverse section of upper firewall crossbeam 8, opening toward passenger compartment 1 a of vehicle 1, is closed by separating wall 4.

A reinforcement (not represented in this figure) could also be welded to upper firewall crossbeam 8 in a manner identical to that of the embodiment of FIG. 3.

By virtue of the invention that has just been described, the motor vehicle comprises an upper firewall crossbeam making it possible simultaneously to assure protection of the braking system, evacuation of water under the window crossbeam and fixation of windshield wiper crank pins, thus reducing the number of parts to be assembled.

In addition, such a crossbeam causes little transverse overcrowding or overweight and remains simple to use and inexpensive.

Claims (7)

The invention claimed is:
1. A motor vehicle comprising:
a motor vehicle body bounded by two body sides and a vehicle floor;
a wall fixed laterally to the body sides and transversely to the vehicle floor, and configured to separate a passenger compartment of the vehicle from an engine compartment; and
an upper firewall crossbeam having a transverse section opening toward the passenger compartment of the vehicle and closed by the wall,
wherein the upper firewall crossbeam is omega-shaped and comprises a first portion configured to be fixed to the wall and a second portion configured to be fixed to the wall, the first and second portions being joined by swaged portions, the first portion being extended toward the engine compartment of the vehicle by a first swaged portion, inclined relative to a longitudinal axis of the vehicle, and
wherein the upper crossbeam comprises orifices configured to cooperate with means for fixation of windshield wiper crank pins.
2. A motor vehicle according to claim 1, wherein the upper firewall crossbeam conforms with a shape of the wall.
3. A motor vehicle according to claim 1, wherein the first and second portions respectively of the upper crossbeam are fixed sealingly to the wall by spot welds.
4. A motor vehicle according to claim 1, wherein the wall comprises a transverse partition configured to be fixed to the vehicle floor and a heating partition configured to be fixed to the transverse partition.
5. A motor vehicle according to claim 4, wherein the upper firewall crossbeam is configured to be fixed by a first portion to the heating partition and by a second portion to the transverse partition.
6. A motor vehicle according to claim 4, wherein the transverse section of the upper firewall crossbeam opening toward the passenger compartment of the vehicle is configured to be closed by the heating partition or by the transverse partition.
7. A motor vehicle according to claim 1, wherein the upper crossbeam is made of swaged sheet metal.
US14/362,012 2011-12-02 2012-11-30 Motor vehicle including an upper firewall crossbeam Active US9216770B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR1161094 2011-12-02
FR1161094A FR2983450B1 (en) 2011-12-02 2011-12-02 Motor vehicle comprising a top traverse of an apron
PCT/EP2012/074016 WO2013079627A1 (en) 2011-12-02 2012-11-30 Motor vehicle including an upper firewall crossbeam

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US20140354011A1 US20140354011A1 (en) 2014-12-04
US9216770B2 true US9216770B2 (en) 2015-12-22

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US14/362,012 Active US9216770B2 (en) 2011-12-02 2012-11-30 Motor vehicle including an upper firewall crossbeam

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US (1) US9216770B2 (en)
EP (1) EP2785576B1 (en)
JP (1) JP6022598B2 (en)
CN (1) CN104024092B (en)
FR (1) FR2983450B1 (en)
WO (1) WO2013079627A1 (en)

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US20160272252A1 (en) * 2015-03-17 2016-09-22 Hyundai Motor Company Front vehicle body reinforcing structure and assembling method thereof
US20170136849A1 (en) * 2015-11-12 2017-05-18 GM Global Technology Operations LLC Water tank cover for a motor vehicle
US20170203704A1 (en) * 2014-05-20 2017-07-20 Renault S.A.S Scoop for a water container built into the dividing wall

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US9481397B2 (en) 2014-06-11 2016-11-01 Fca Italy S.P.A. Motor vehicle body provided with a structure for receiving and draining water

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170203704A1 (en) * 2014-05-20 2017-07-20 Renault S.A.S Scoop for a water container built into the dividing wall
US10000166B2 (en) * 2014-05-20 2018-06-19 Renault S.A.S. Scoop for a water container built into the dividing wall
US20160272252A1 (en) * 2015-03-17 2016-09-22 Hyundai Motor Company Front vehicle body reinforcing structure and assembling method thereof
US9776670B2 (en) * 2015-03-17 2017-10-03 Hyundai Motor Company Front vehicle body reinforcing structure and assembling method thereof
US20170136849A1 (en) * 2015-11-12 2017-05-18 GM Global Technology Operations LLC Water tank cover for a motor vehicle

Also Published As

Publication number Publication date
EP2785576A1 (en) 2014-10-08
JP2015500163A (en) 2015-01-05
EP2785576B1 (en) 2016-02-03
WO2013079627A1 (en) 2013-06-06
US20140354011A1 (en) 2014-12-04
CN104024092A (en) 2014-09-03
FR2983450A1 (en) 2013-06-07
CN104024092B (en) 2016-10-05
JP6022598B2 (en) 2016-11-09
FR2983450B1 (en) 2014-05-16

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